FotaDatagramHeaderPacketPayload

Structure representing the datagram header (In the payload) More...

#include <fota_datagram.h>

Public Attributes
uint8_t	target_node_id
FotaDatagramType	type
uint16_t	num_packets
uint32_t	datagram_id
uint32_t	total_length
uint32_t	datagram_crc32
uint32_t	packet_crc32

Detailed Description

Structure representing the datagram header (In the payload)

Datagram Header Payload Format (20 bytes total):

+----------------—+-------------—+------------------------------------------------------------—+ | Field | Size (bytes) | Description | +----------------—+-------------—+------------------------------------------------------------—+ | target_node_id | 1 | Target node ID (0 = RF Board, 1,2... = CAN Bootloader board) | | type | 1 | Type of datagram (enum FotaDatagramType) | | num_packets | 2 | Number of data packets in this datagram (excluding header) | | datagram_id | 4 | Unique identifier for this datagram | | total_length | 4 | Total length of the datagram data | | datagram_crc32 | 4 | CRC32 of the entire datagram data | | packet_crc32 | 4 | CRC32 of this header packet payload | +----------------—+-------------—+------------------------------------------------------------—+

All fields are encoded in little-endian format.

Member Data Documentation

datagram_crc32

uint32_t datagram_crc32

CRC of the entire datagram for verification

datagram_id

uint32_t datagram_id

Unique ID for this datagram

num_packets

uint16_t num_packets

Number of packets in this datagram excluding the header packet

packet_crc32

uint32_t packet_crc32

CRC of the header packet

target_node_id

uint8_t target_node_id

Target node ID

total_length

uint32_t total_length

Total length of datagram content

type

FotaDatagramType type

Type of datagram

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The documentation for this struct was generated from the following file:

• projects/fota/inc/fota_datagram.h